Hermann wolff



HERMA'NN WoLFF, or MILWAUKEE, WISCONSIN.

Letters Patent No. 102,192, dated April 19, 1.870.

IMPROVED SHUTTER-WORKER.

The Schedule referred to in these Letters Patent and making part of thesame To all whom it 'may concern Be it known that I, HERMANN XVOLFF, ofthe cityand county of Milwaukee and State of Wisconsin, have invented anew and useful Improvement in Blind- .WVorker and Fastener; and I dohereby declare that the following is a full, clear, and exactdescription thereof', which will enable those skilled in the art to makeand usethe same, reference being had to the accompanying drawing formingpart of this specification, in whch- Figure 1 is a perspective view ofmy invention, and

Figure 2 a sectional view.

Similar letters of referencein each of the gures indicate correspondingparts.4

The object of my invention is to provide a blindworker which will openand close a window-blind, and fasten the same open or closed, and onethat can be put onto any blind new in use, without changing the hinges.

A is the window-flame.

B, the blind.

v O, theknob.

D, the shank.

E, a metallic case, through which shank D passes, .with a slot in oneside of it, in which pin l? passes.

F, a round sliding'rod, into one end of which boltI D screws, and to theother is pinned tumbler H.

G, slot in hollow cylinder L, in which slides the point of tumbler H. H,tumbler, which operates the blind.

I, pin passing through ears on piece K and the hole in the end oftumbler H. This hole in tumbler H is made larger than the pin, and widerat its outer end. K, a piece with ears, fastened to the blind. L, around hollow cylinder passing through the blind-casing, and with a angefastened to the outside of the casing.

M, a pin through a projection in the iange of cylinder L, over whichtumbler H plays when hauled out or shoved in to open or close the blind.

N, pin which fastens rod F to tumbler H. O, pin through the ears onpiece K, for 'the tumbler H to rest onfwhen the blind is closed. Thispin,

and pin M do not pass through tumbler H.

P, a pin in shank D, which, when the shank is turned so that it shallcome opposite the slot in case E, will let the shank' be pulled out,.vhichwill open the-blind; and when the blind is open, turn thel shankD, and the pin will strike against the end of 'case E and hold the blindopen; and when closed, the same operation will take place at the otherend.v

Q, a slot in case E, for pin I to work in.

Operation.

Take hold of the knob and turn it till the pin P comes opposite the slotQ, then pull ont on the'knob, and the blind Will be opened; and thenturn the knob till the pin P shall press hard against the outside of thecase E, which is made raised on one side, gradually rising in the form of a screw, and the blind will be held open fast; and reverse the motionto close the blind, and turn the knob, and pin P will hold the blindclosed, the same as it is held open.

Claims.

I claim as my invention- 1. Shank D, case E, beveled or screw-shaped atits ends, with slot Q and pin P, substantially as described. 2.' Tumbler]zl, playing on its fnlcrum-pin M, by means of which the sliding rod Ffits tightly and works easily in the cylinder L, substantially asdescribed.

HERMANN WOLFF. Witnesses:

J. B. SMITH, W. M. HoRNoR.

